Answer to Question #310068 in Cell Biology for Pleasehelpme!!

Question

3. Consider the system, G + H <===> I + J at 25 °C. What is the total free energy change of this system if the total enthalpy change (heat content change) of the system is 2637 J/mol and the total entropy change is -0.78 kJ/mol.K ?

 

Is the system described in problem #5 endothermic or exothermic? _______________________ 

Is the system described in problem #1 endergonic or exergonic? _________________________

 

4. Consider the two systems shown below. These systems are coupled such that compound X carrying a phosphate group (X-P) transfers the phosphate to compound Y forming Y-P (that is Y carrying a phosphate group). (Pi represents unbound phosphate.)

Reaction 1: X-P + H2O <===> X + Pi ∆G = -43.0 kJ/mol Reaction 2: Y + Pi <===> Y-P + H2O ∆G = +29.4 kJ/mol

What is the ∆G for the combined system? ___________________________________________ 

Which reaction (system) is driving the other to proceed? _________________________________

Answer 1

# 5- Endothermic

#1- exergenic